Wrench.



No. 788,383. PATENTED APR. 25, 1905.

P. 0. THAYER.

WRENCH.

APPLICATION FILED NOV. 10. 1904.

,gul C. nab/e1' Patented April 25, 1905.

PATENT OEEICE.

PAUL O. THAYER, OF OROVILLE, CALIFORNIA.

WRENCH.

lS1ECIEIOATION forming part of Letters Patent N o. 788,383, dated April 25, 1905.

Application filed November 10j 1904. Serial No. 232,162.

To (LIZ whom it r11/nay concern:

Beit known that I, PAUL O. THAYER, a citi- Zen of the United States, residing at Oroville, in the county of Butte and State of lalifornia, have invented certain new and useful Improvements in Wrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to monkey-wrenches; and one of the objects of the same is to provide a wrench which may be quickly and accurately adjusted to engagenuts or burs of various sizes.

Another object is to provide a wrench which when adjusted to vlit a nut or bur will reliably engage the same and will not be liable to slip therefrom.

These and other objects are attained by means of the construction illustrated in the accompanying' drawings, in whicha Figure 1 is a side view of a wrench made in accordance with my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a vertical section on the line 1 1 of Fig. 1. Fig. 4 is a section on the line 2 2 of Fig. 1.

Referring to the drawings for a more particular description of my invention, the numeral 1 designates a shank, having a jaw 2 rigidly connected thereto or formed therewith. The shank 1 is provided with a shoulder 3, and a spring 4 surrounds the shank 1 at its reduced outer end, said spring 4 having one end, 4, secured to a sleeve 8, hereinafter mentioned, and its opposite end connected to the head or cap 5, the tension of said spring being such that it has a tendency to rotate the shank and to draw said shank within the handle 6. A series of teeth or serrations 7 are formed on the shank 1 between the shoulder 3 and the jaw 2. The handle 6 is hollow and is provided with a sleeve 8, which su rroundsthe shank 1, and upon its outer end is provided with a fixed jaw 9 and a series of teeth or serrations 10 to engage the teeth or serrations7 on the shank 1, and upon the opposite side of said sleeve a pivoted pawl 11 is provided. The pawl 11 is pivoted at 12 and provided with a stud or pin 13, which extends through an openingin the sleeve 8. A groove 14 is formed in the shank 1, and upon the upper side of said shank a longitudinal recess or groove 15 is formed in line with the serrations or teeth 7 on the shank 1. A flange or shoulder 8 may be formed inside the sleeve thus moved laterally out of engagement with the teeth 7 and into alinement with the groove 14, when the expansive action of said spring will draw the shank within the sleeve and bring the jaws together at right angles one tothe other. W'hen the wrench is to be engaged with a nut or bur, the jaw 2 is placed against one surface of the nut or bur and the handle 6 is drawn outward until the jaw 9 engages the opposite side of the nut, when the handle is turned to bring the two jaws in alinement and the teeth 7 and 10 into engagement. The pawl 11 is then thrown down, the stud 13 engaging the longitudinal recess 15 to prevent the spring 4 from rotating the shank 1 relatively to the sleeve 8. To remove the wrench from the nut, the pawl 11 is thrown up and the spring 4 moves the jaw 9 at right angles to the jaw 2, and thus releases the nut.

` From the foregoing it will be obvious that my wrench may be operated quickly to en* gage a nut, that when said nut has been engaged there is not any liability of the jaws slipping, owing to the fact that the shank 1 is engaged upon opposite sides by the teeth and the pawl.

Various changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacriiicing any of the advantages of my invention. A

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A wrench comprising a jaw, ashank extending therefrom, serrations upon the shank, a handle provided with a sleeve the latterliav- IOO ing teeth to engage said serrations and carrying a paWl adapted to engage a recess in the shank, a spring surrounding said shank and secured at one end to said sleeve and connected at its opposite end to a cap upon said shank. said handle adapted to be rotated by the spring to throw the serrations out of engagement with the teeth to engage a nut, substantially as described.

2. A wrench comprising a jaw, a sliding' shank secu red thereto and provided with teeth or serrations, and a groove adjacent to the serrations, a handle provided with a sleeve carrying a lixed jaw'and provided with serrations upon one side, and a pivoted pawl upon the other,` a spring surrounding the shank of the sliding jaw, and adapted to rotate the shank 'relatively to the handle, substantially as demy hand in presence of two subscribing witnesses.

' PAUL C. THAYER. l/Vitnesses:

J No. P. LEONARD, WM. HERBERT. 

